21103216

素因数分解:

$2^4\times {\mathrm{311}}^1\times {\mathrm{4241}}^1$

素因数の和:4560

約数の個数: 20

約数和(自身を含む): 41028624

約数和(自身を除く): 19925408

約数列:

[1, 2, 4, 8, 16, 311, 622, 1244, 2488, 4241, 4976, 8482, 16964, 33928, 67856, 1318951, 2637902, 5275804, 10551608, 21103216]

約数ペア:

[(1, 21103216), (2, 10551608), (4, 5275804), (8, 2637902), (16, 1318951), (311, 67856), (622, 33928), (1244, 16964), (2488, 8482), (4241, 4976)]